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The fact is that if not for the tilt of the earth, then most crops and farms would be devastated and mass-starvation would occur due to temperature changes.

Things like grapes and apples would be very rare or impossible to find if they did not die out already.

Water supplies in the hot regions would be very scarce. The earth would not be able to sustain life as we know it.



Why do you think so?
They say you are very bright so maybe you would like to show us in more detail how you came to these conclusions?

How critical is the tilt angle, for instance. Unless you are just guessing, you obviously have access to an earth climate simulator so maybe you could run a simulation for +-5 degrees tilt. What does it say?